Chapter 2. Taking Measurements
24 Model PM880 Portable Hygrometer User’s Manual
2.3 Making Probe Connections
Use the following steps to make probe connections:
1. Make sure the PM880 is turned off.
2. Connect the cable to the probe by inserting the bayonet-type connector
onto the probe and twisting the shell clockwise until it snaps into a
locked position.
Note: The connector on the probe cable must be rotated until it aligns with
the pins in the probe connector, before the cable may be properly
inserted into the probe and secured.
3. Connect the other end of the probe cable to the top of the unit by
aligning the red dot on the cable connector at the 12 o’clock position.
See Figure 12 for the connector location.
Note: Remove the probe cable by pulling back the spring-loaded sleeve and
pulling the cable out of the connector.
Figure 12: Connection Locations
WARNING! TO ENSURE THE SAFE OPERATION OF THE PM880, YOU MUST
INSTALL AND OPERATE IT AS DESCRIBED IN THIS MANUAL. IN
ADDITION, BE SURE TO FOLLOW ALL APPLICABLE SAFETY CODES
AND REGULATIONS FOR INSTALLING ELECTRICAL EQUIPMENT IN
YOUR AREA.
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